Battery module and battery pack

Abstract

The utility model provides a battery module and a battery pack, and relates to the technical field of battery packs. The battery module comprises a battery pack, a first ribbon, two clamping pieces and two end plates, wherein the two end plates are respectively positioned on two opposite sides of the battery pack along the length direction, so that the battery pack is correspondingly clamped; and the first binding belt is positioned at the top of the battery pack so as to bind the upheaval of the battery pack in the vertical direction. In order to guarantee the binding and limiting effects, the two ends, extending in the length direction of the battery pack, of the first binding belt are connected with the two clamping pieces correspondingly, and clamping grooves matched with the clamping pieces are formed in the end plates. Based on the arrangement, after the battery module is assembled, the first binding belt only occupies the space of the end plate in the vertical direction and limits and limits the top of the battery pack all the time, so that the flatness of the battery module is ensured, and the problem of potential safety hazards in the use process of the battery module is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and more specifically, to a battery module and a battery pack. Background Art

[0002] In some devices or systems, standard-sized battery modules may not be able to adapt to their spatial layout. To meet the requirements of specific application scenarios, non-standard battery modules are generally designed and manufactured.

[0003] However, for non-standard long battery modules, during the grouping process, the battery pack will bulge to a certain extent, affecting the flatness of the bottom of the module, resulting in a decrease in the mode of the module and even the battery pack. When put into use, there are significant safety hazards. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a battery module and a battery pack, which can limit the bulge of the battery cells in the vertical direction that may occur during the grouping process, thereby ensuring the flatness of the battery module and preventing potential safety hazards during use.

[0005] The embodiments of the utility model are implemented as follows:

[0006] In a first aspect, the utility model provides a battery module, including: a battery pack, a first cable tie, two clamping members, and two end plates;

[0007] The first cable tie is located at the top of the battery pack, and the two ends extending along the length direction of the battery pack are respectively connected to the two clamping members;

[0008] The two end plates are respectively located on the opposite sides of the battery pack along the length direction, and the end plates are provided with clamping grooves that cooperate with the clamping members.

[0009] In an alternative embodiment, a partial top wall of the end plate bulges upward to form a protruding portion, and the protruding portion is provided with a clamping groove.

[0010] In an alternative embodiment, the projection of the clamping groove on the horizontal plane is U-shaped with an open end facing away from the battery pack side of the end plate.

[0011] In an alternative embodiment, the clamping member is cylindrical, and the projection of the clamping groove on the vertical plane is arc-shaped to cooperate with the clamping member.

[0012] In an alternative embodiment, the battery module further includes a fastener, and the fastener passes through the clamping member and is connected to the bottom wall of the clamping groove, and the fastener, the clamping member, and the clamping groove correspond one by one.

[0013] In an alternative embodiment, the two clamping members are respectively welded to the opposite ends of the first cable tie.

[0014] In an alternative embodiment, the first cable tie is a steel strip or a plastic strip.

[0015] In an alternative embodiment, the battery module further includes a second cable tie that surrounds two sides and two end plates of the battery pack in the length direction.

[0016] In an alternative embodiment, the number of the second cable ties is two, and one of the second cable ties is a plastic cable tie and the other is a steel cable tie.

[0017] In a second aspect, the present utility model provides a battery pack, including a housing and the battery module according to any one of the foregoing embodiments, and the battery module is located inside the housing.

[0018] The beneficial effects of the embodiments of the present utility model include:

[0019] The present application provides a battery module and a battery pack. The battery module includes a battery pack, a first cable tie, two clamping members, and two end plates. Among them, the two end plates are respectively located on opposite sides of the battery pack along the length direction, thereby clamping the battery pack accordingly; and the first cable tie is located at the top of the battery pack to facilitate restraining the bulge of the battery pack in the vertical direction. To ensure the effect of restraining and limiting, the two ends of the first cable tie extending along the length direction of the battery pack are respectively connected to the two clamping members, and the end plates are provided with card slots that cooperate with the clamping members. Based on the above settings, after the battery module is assembled, the first cable tie only occupies the space of the end plates in the vertical direction and always restrains and limits the top of the battery pack, thereby ensuring the flatness of the battery module and preventing potential safety hazards during the use of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic assembly diagram of the battery module provided by the embodiment of the present utility model;

[0022] Figure 2 It is an exploded schematic diagram of the battery module provided by the embodiment of the present utility model;

[0023] Figure 3 It is provided by the embodiment of the present utility model Figure 2 The enlarged schematic diagram at A in;

[0024] Figure 4This is a partial schematic diagram of the battery module provided by the embodiments of the present utility model.

[0025] Icons: 10 - battery module; 100 - first tie strap; 200 - second tie strap; 300 - clamping member; 400 - fastening member; 500 - end plate; 510 - protruding portion; 511 - card slot; 700 - battery pack. Detailed implementation manners

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the protection scope of the present utility model.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0030] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0031] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "arrangement", "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] The present application provides a battery pack, which includes a housing and a battery module 10 located inside the housing. Through the design of the battery module 10, the uplift of the battery cells in the vertical direction that may occur during the grouping process is restricted, thereby ensuring the flatness of the battery module 10 and preventing potential safety hazards during use.

[0033] In particular, the above design is for the modal correction of non-standard length battery modules 10, and specifically, it can be applied to non-standard length battery modules 10 with a length dimension between 500 mm and 2000 mm.

[0034] Next, the specific structures of the various components of the battery module 10 provided in this embodiment and the corresponding relationships between them will be described in detail.

[0035] Figure 1 is an assembly schematic diagram of the battery module 10 provided by the embodiment of the present utility model. Figure 2 is an exploded schematic diagram of the battery module 10 provided by the embodiment of the present utility model. Please refer to Figure 1 and Figure 2 , the present application provides a battery module 10, which includes a battery pack 700, a first cable tie 100, two clamping members 300, and two end plates 500.

[0036] Among them, the two end plates 500 are respectively located on the opposite sides of the battery pack 700 along the length direction, thereby clamping the battery pack 700 correspondingly; and the first cable tie 100 is located on the top of the battery pack 700 to facilitate restraining the uplift of the battery pack 700 in the vertical direction.

[0037] To ensure the effect of restraining and limiting, the two ends of the first cable tie 100 extending along the length direction of the battery pack 700 are respectively connected to the two clamping members 300, and the end plate 500 is provided with a slot 511 that cooperates with the clamping member 300.

[0038] That is, through the clamping member 300 and the card slot 511, both ends of the first cable tie 100 are tightly connected to the two end plates 500 to ensure that the first cable tie 100 can provide sufficient and stable pressing force. After the battery module 10 is assembled, the first cable tie 100 only occupies the space of the end plate 500 in the vertical direction, always binding and limiting the top of the battery pack 700, thereby ensuring the flatness of the battery module 10 and preventing potential safety hazards during the use of the battery module 10.

[0039] In addition, it should be noted that the battery pack 700 here is specifically a cuboid structure formed by arranging and stacking a plurality of battery cells.

[0040] As an alternative embodiment, the first cable tie 100 is a steel strip or a plastic strip. It can be understood that the plastic cable tie is relatively light, will not significantly increase the overall weight of the battery module 10, and has a low cost, which is suitable for mass production. The steel strip has high mechanical strength, is not easily deformed, and can provide sufficient and stable pressing force. In actual production, the staff can select a suitable first cable tie 100 according to parameters such as the specific length of the battery module 10, which is not limited in this application.

[0041] In some embodiments, to ensure the clamping effect of the two end plates 500 on the battery pack 700, the battery module 10 further includes a second cable tie 200, and the second cable tie 200 surrounds two sides of the battery pack 700 in the length direction and the two end plates 500.

[0042] That is to say, in this application, the second cable tie 200 bundles the two end plates 500 and the battery pack 700 therebetween, eliminating the gaps between the battery cells in the battery pack 700 and between the battery pack 700 and the end plates 500, and avoiding the phenomenon of tilting or displacement of the battery pack 700 during application, thereby improving the overall structural strength of the battery module 10.

[0043] In addition, it should also be noted that considering the tightening force and structural strength of the second cable tie 200, the second cable tie 200 is a strip structure with an integrally formed head and tail. In other embodiments, the battery module 10 may further include side plates, and the overall structural strength of the battery module 10 is improved by connecting the two ends of the side plates to the two end plates 500 respectively, which will not be elaborated in this application.

[0044] Similar to the first cable tie 100, the second cable tie 200 can also be set as a steel strip or a plastic cable tie according to the actual situation. In particular, in the embodiments provided in this application, the number of the second cable ties 200 is two, and one of the second cable ties 200 is a plastic cable tie for facilitating the preliminary fixation of the battery pack 700 and the end plates 500; the other second cable tie 200 is a steel strip for strengthening the stability of the overall structure.

[0045] Based on the above settings, the present application takes into account both cost - effectiveness and strength requirements to achieve higher safety and reliability.

[0046] Please refer to Figure 3 , since welding can form a very firm connection and its strength can usually be close to or exceed that of the base material. To improve the stability of the connection between the clamping member 300 and the first tie - strap 100, the two clamping members 300 are respectively welded to the opposite ends of the first tie - strap 100. It can be understood that the first tie - strap 100 here is a steel strip and the clamping member 300 is a metal part.

[0047] Correspondingly, as Figure 4 shown, to ensure the stability of the connection between the clamping member 300 and the card slot 511, the battery module 10 further includes a fastener 400, and the fastener 400 passes through the clamping member 300 and is connected to the bottom wall of the card slot 511. Based on this, during the connection process of the fastener 400, the staff can adjust the pre - tightening force applied to the bottom wall of the clamping member 300 and / or the card slot 511 to ensure the reliability and stability of the connection.

[0048] Moreover, the fastener 400, the clamping member 300, and the card slot 511 are in one - to - one correspondence. It can be understood that the one - to - one correspondence here means that they are set in one - to - one correspondence in both the positional relationship and the quantity relationship. Optionally, the fastener 400 can be set as a bolt or a screw, which is not limited in the present application.

[0049] Please refer to again Figure 3 , to facilitate the staff to locate and connect the first tie - strap 100 to the end plate 500, a convex portion 510 is formed by locally protruding the top wall of the end plate 500 upward, and a card slot 511 is provided in the convex portion 510. It can be understood that the staff can identify the connection position by recognizing the convex portion 510, thereby improving the installation efficiency.

[0050] Moreover, it can be understood that after the two end plates 500 are positioned and attached to both sides of the battery pack 700 in the length direction, the two convex portions 510 on the two end plates 500 are located on the same straight line to ensure that the first tie - strap 100 will not be tilted and pulled, affecting the binding effect on the bulge of the battery pack 700.

[0051] Furthermore, the projection of the card slot 511 on the horizontal plane is a U - shape with an open end facing away from the battery pack 700 on the side of the end plate 500. Based on the above settings, when the clamping member 300 is positioned with the card slot 511, since the length of the first tie - strap 100 is fixed, correspondingly, in the length direction of the battery pack 700, a certain pressing force is also applied to the end plate 500 and the battery pack 700, achieving the technical effect of improving the overall structural stability of the battery module 10.

[0052] Furthermore, considering the connection stability and durability between the clamping member 300 and the card slot 511, the clamping member 300 is cylindrical, and the projection of the card slot 511 on the vertical plane is an arc shape that matches the clamping member 300. It should be noted that, on the one hand, the arc-shaped connection can effectively disperse stress, avoid stress concentration, and reduce the risk of local damage; on the other hand, the arc-shaped connection can also reduce the friction on the contact surface and the number of contact points, and correspondingly reduce the wear at the connection.

[0053] Taking this embodiment as an example, the present application provides a battery module 10, and its specific working principle or working process is as follows:

[0054] First, the staff arranges and stacks a plurality of battery cells to form a cuboid battery pack 700, and then respectively sets two end plates 500 on the opposite sides of the battery pack 700 in the length direction. After that, put on the second tie 200 which is a plastic tie strap to achieve the preliminary fixation of the battery pack 700 and the end plates 500; then put on the second tie 200 which is a steel strap to improve the overall mechanical stability of the battery module 10 after bundling.

[0055] After that, determine the length of the first tie 100 according to the length of the battery module 10 at this time, and weld two clamping members 300 at both ends in the length direction of the first tie 100. Finally, connect the clamping members 300 to the card slots 511 of the protrusions 510, and use fasteners 400 to lock and fix. After the installation is completed, the first tie 100 is located at the top of the battery pack 700, and always restricts and limits the bulge of the battery pack 700 in the vertical direction.

[0056] In summary, the present application provides a battery module 10 and a battery pack. The battery module 10 includes a battery pack 700, a first tie 100, two clamping members 300, and two end plates 500. Among them, the two end plates 500 are respectively located on the opposite sides of the battery pack 700 along the length direction, so as to clamp the battery pack 700 accordingly; and the first tie 100 is located at the top of the battery pack 700 to facilitate restricting the bulge of the battery pack 700 in the vertical direction. To ensure the effect of restricting and limiting, both ends of the first tie 100 extending along the length direction of the battery pack 700 are respectively connected to the two clamping members 300, and the end plates 500 are provided with card slots 511 that cooperate with the clamping members 300. Based on the above settings, after the battery module 10 is assembled, the first tie 100 only occupies the space of the end plates 500 in the vertical direction, and always restricts and limits the top of the battery pack 700, thereby ensuring the flatness of the battery module 10 and preventing potential safety hazards during the use of the battery module 10.

[0057] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A battery module, characterized in that: include: A battery pack (700), a first cable tie (100), two clips (300), and two end plates (500); The first strap (100) is located at the top of the battery pack (700), and the two ends extending along the length direction of the battery pack (700) are respectively connected to the two clamping members (300); The two end plates (500) are respectively located on two opposite sides of the battery pack (700) along the length direction, and the end plates (500) are provided with a card slot (511) that cooperates with the card connector (300).

2. The battery module according to claim 1, characterized in that: The top wall of the end plate (500) partially protrudes upward to form a protruding portion (510), and the protruding portion (510) is provided with the clamping groove (511).

3. The battery module according to claim 1, characterized in that: The projection of the card slot (511) on a horizontal plane is a U-shape with the opening end facing the side of the end plate (500) away from the battery pack (700).

4. The battery module according to claim 1, characterized in that: The clamping member (300) is cylindrical, and the projection of the clamping slot (511) on a vertical plane is in the shape of an arc that matches the clamping member (300).

5. The battery module according to claim 1, characterized in that: The battery module (10) further comprises a fastener (400), and the fastener (400) passes through the clamping member (300) and is connected to the bottom wall of the clamping slot (511), and the fastener (400), the clamping member (300) and the clamping slot (511) correspond to each other one by one.

6. The battery module according to any one of claims 1 to 5, characterized in that: The two clamping parts (300) are respectively welded to two opposite ends of the first cable tie (100).

7. The battery module according to any one of claims 1 to 5, characterized in that: The first cable tie (100) is a steel strap or a plastic strap.

8. The battery module according to any one of claims 1 to 5, characterized in that: The battery module (10) further comprises a second tie (200), wherein the second tie (200) surrounds two side surfaces of the battery pack (700) in the length direction and the two end plates (500).

9. The battery module according to claim 8, characterized in that: The number of the second cable ties (200) is two, and one of the second cable ties (200) is a plastic cable tie, and the other of the second cable ties (200) is a steel tie.

10. A battery pack, characterized in that: It comprises a shell and a battery module (10) according to any one of claims 1 to 9, wherein the battery module (10) is located in the shell.

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